| 摘要 |
PROBLEM TO BE SOLVED: To limit the quantity of a mold resin material used for reducing the weight and surely prevent the mold resin material from leaking from a case. SOLUTION: A coil 43 is housed in a coil cavity 47 of a coil-securing pan 45, a mold resin 50 is injected around the outside of the coil 43 and dammed up by a wall 46 of the coil cavity 47, resulting in that the resin 50 which is not filled in the entire space of a case 4 to reliably prevent the resin 50 from leaking out of the case 4. The wall 46 is formed along the outline of the coil 43 for suppressing the filling quantity of the resin 50 to minimum essentials, thereby effectively attaining the weight reduction of a noise filter 3.
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